Dish furrow-opener.



' B. R. BEEMAN & T. BRENNAN, JR.

DISK FURROW OPENER.

APPLICATION FILED 811F126, 1910.

Patented Aug. 29, 1911.

2 SHEETS-SHEET 1.

COLUMBIA I E. R. BEEMAN & T. BRENNAN, JR.

DISK rumww ormmn.

APPLICATION FILED SEPT. 6, 1910. 1,001,920, Patented Aug. 29, 1911.

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COLUMBIA PLANOGRAPH IO-,WAsnlNu'loN. D. c.

64w n/Q. canam/ EDWIN R. BEEMAN AND THOMAS BRENNAN, JR., 015MINNEAPOLIS, MINNESOTA, AS- SIGNORS TO THE MONITOR DRILL COMPANY, OFMINNEAPOLIS, MINNESOTA, A COR- PORATION OF MINNESOTA.

DISK FURROW-OPENER.

Specification of Letters Patent.

Patented Aug. 29, 1911.

To all whom it may concern:

Be it known that we, EDWIN It. BEEMAN and THOMAS BRENNAN, J12, bothcitizens of the United States, and both residing at Minneapolis, in thecounty of Hennepin and State of Minnesota, have invented certain new anduseful Improvements Concerning Disk Furrow-Openers, of which thefollowing is a specification.

The action of a single disk furrow opener when in use depends verylargely upon the character of the soil being turned and the angle whichthe general plane of the disk makes with the direction of movement. Inorder to get the best results when turning some soils, the disk shouldbe practically vertical but inclined to an angle with respect to thedirection of travel of the furrow opener. When turning other soils, thedisk should be inclined to an angle with the direction of motion andalso its top portion should be tilted toward its convex side. Also, thedegree of the angle of incline and of tilt will depend upon the natureof the soil and the form of the furrow to be opened.

In general the quality of soil and the uses to which the furrow openersare to be placed in any given locality are fairly uniform, so that allof the furrow openers used in that locality are substantially alike.Thus, for example, in the Northwest the majority of the disks are usedwith only a slight angle between the general plane of the disk and thedirection of travel, and the disks stand practically vertical, whereasin the Southwest the majority of the disks are inclined to aconsiderable angle from the direction of travel and they are tilted outto give considerable suction in their lower portions. Then it isnecessary to manufacture a large number of different standards of disk,the cost of manufacture is increased and the amount of stock which mustbe kept on hand by any dealer is very large: he must be prepared todeliver any one of a number of styles of furrow opener. It very oftenhappens, also, that a farmer desires to make use of furrow openershaving different angles, either on account of change in the condition ofthe soil or on account of using the furrow openers for difierentpurposes. Evidently, when each furrow opener is made With a fixed angleand tilt the farmer must carry a number of styles in his equipment toget the best results.

The main object of this invention is to provide a construction of furrowopener of simple design such that the angle between the general plane-ofthe disk and the directlon of travel of the furrow opener and the amountof tilt out of the vertical can be very easily changed without thenecessity of uslngspeclal tools and without the necessity of ad usting anumber of parts, so that the manufacturer can assemble standard disks onstandard drawbars to give any angle desired, thus permitting him tosupply furrow openers for any requirements out of one stock of standardparts, and so that the farmer can change the afore mentioned angle ortilt, or both, according to his requlrements at'any time.

Other objects and uses will appear from a detailed description of theinvention, which consists in the details of construction and combinationof parts hereinafter described and claimed.

In the drawings-Figure 1 shows a plan view of one form of furrow opener,showmg the relation which the disk bears to the drawbar; Fig. 2 is adetail side elevation of the central portion of the disk and the end ofthe drawbar; Fig. 3 is a detail cross section of the central portion ofthe disk and associated parts, showing one form of hub attached to thedisk and showing the manner in which our improved washer serves tosupport the same on the drawbar at the proper predetermined angle; Fig.4 is a perspective view of one form of our improved adjustment washer,it being beveled in two directions, both from front to rear and from topto bottom; Fig. 5 is an end view of the washer of Fig. 4; Fig. 6 is across-section of a washer similar to' that of Fig. 4, but beveled inonly one direction, viz: from front to rear; Fig. 7 is an end view ofthe washer of Fig. 6; Fig. 8 is a perspective view of a modified formofwasher beveled in two directions but perfectly fiat on both sides, sothat it may be turned over to present either face to the drawbar; andFig. 9 is a cross-section taken through the washer of Fig. 8 andshowing. the same as applied to the end of a modified form of drawbar.

In the embodiment of our invention we provide an adjustment washer-whichis interposed between the hub of the disk and the end of the drawbar, oris attached to these parts in such a way as to determine the exactangles which the hub of the disk shall bear with respect to the drawbar,thus also determining the angle between the general plane of the diskand the drawbar and thus fixing the angle between the disk and thegeneral direction of travel and the amount of tilt of the disk.Evidently by changing the washer or by reversing one which has beenpreviously used the adjustment of the disk will be changed.

Referring now to Figs. 1, 2 and 3 of the drawings,'the adjustment washer10 is interposed between the disk 11 and the end of the drawbar 12. I11practice it is necessary to support the disk in such a way as to permitits rotation about the hub and it is customary to permit of certainslight automatic angular adjustments between the disk and the drawbar tocompensate for wear of the former and to insure proper contact betweenthe disk and the scraper. These angular movements of the disk, however,are comparatively small and do not need to be considered. In thisapplication we do not concern ourselves with the exact form of hubwhereby the disk is supported, beyond the fact that said hub should beprovided with a bolt whereby it may be securely attached to the drawbar.In the construction illustrated the hub is provided with a rectangularhead 13 and a bolt 14 passing through the same.

The preferred form of washer is illustrated in Figs. 4 and 5. It isbeveled from the end 15 toward the end 16 and from the side 17 towardthe side 18, and its inner and outer faces are plane. Therefore itdiminishes in thickness uniformly from the corner 19 to the corner 20.On the upper and lower edges of one side it is provided with ribs 21 and22 spaced to provide a channel between them of width to loosely receivethe end of the drawbar. In its central portion it is provided with ahole 28 of size and shape to receive the head 13, to prevent rotation ofthe latter and therefore of the hub with respect to the drawbar.

By inserting the above described washer between the hub and drawbar withits edge 17 upward and its end 15 forward, the disk will be supported insuch a way that its upper edge will be tilted out beyond its lower edgein the direction of its convex side, and the forward edge of the diskwill be twisted outward with respect to the rear edge thereof, also inthe direction of the convex side. By loosening the bolt sufliciently topermit this washer to be turned 180 degrees, thus bringing the edge 18upward and the end 16 forward, the tilt and incline of the disk will bereversed, and by properly forming thedrawbar the parts can be soproportioned that the disk will now stand practically vertical andpractically in the direction of travel of the furrow opener. Thus bymerely reversing the washer the characteristics of the furrow opener arechanged in such a way as to adapt it for a new and different service. Bymerely removing the nut from the bolt 14 so that the washer can beremoved entirely, and then by inserting a different washer formed withdifferent angles between its faces the disk can be supported at anyangle desired.

In Figs. 6 and 7 we illustrate a form of washer which is beveled onlyfrom front to rear. lVhen using this washer the disk will alwaysmaintain the same angle with respect to the vertical and only its angleof set with respect to the direction of travel will be changed byreversing the washer.

In Figs. 8 and .9 we illustrate a form of washer somewhat different fromeither of those above shown and described. In this case the washer isnot provided with ribs 21 and 22, but is perfectly plane on both sides.The end of the drawbar is provided with a pair of lugs 24; and25,.adapted to engage holes 26 and 27 of the washer to prevent itsrotation. This washer may be inserted with either face in contact withthe side of the drawbar, with either end forward, or with either edgeupward; thus the same washer may be used for a number of differentadjustments, permitting its use under a wide range of conditions.

It will be understood that we do not'limit ourselves to any particularform of washer nor even to the washers herein illustrated except asspecified in the claims, but we in:

clude within the scope of our invention any equivalent construction fordetermining the position in which the disk is supported with respect tothe drawbar. 7

We claim: V

,1. In combination with a draw bar and a disk mounting, provided with anon-cir cular neck, an adjustment washer interposed between the draw barand the disk mounting, and provided on its upper and lower edges withribs suitably spaced to engage the edges of the draw bar to preventrotation of the adjustment washer with respect to the same, and providedin its central portion with a non-circular hole adapted to co-act withthe neck of the disk mounting to prevent rotation of the same withrespect edges of the draw-bar to prevent rotation of p the adjustmentwasher with respect to the same, and provided in its central portionwith a non-circular hole adapted to co-act with the neck of the diskmounting to prevent rotation of the same with respect to the washer, thewasher tapering from one corner to the diagonally opposite corner,substantially as and for the purpose set forth.

3. The combination with a draw-bar having its rear portion extending atan angle with the line of draft, a disk mounting on said rear portionand an adjustment washer interposed between the rear portion of thedraw-bar and the disk mounting and provided with upper and lower ribsadapted to co-act with the upper and lower edges of the draw-bar andsuitably spaced to prevent rotation of the adjustment washer withrespect to the drawbar, the adjustment washer being suitably formed withrespect to the disk mounting to maintain the same against rotation andthe adjustment washer tapering in thickness from end to end, whereby theadjustment washer serves to maintain the disk mounting against rotationand serves to determine the angle between the disk and the draw-bar,substantially as described.

EDWIN R. BEEMAN.

THOS. BRENNAN, JR.

Witnesses:

A. R. TARBoX, C. P. WEYMER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

